South Boulder Creek parkrun

Lace up for the South Boulder Creek parkrun, a vibrant 5K community event taking place on Saturday, April 18, 2026, in scenic Boulder, Colorado. This free, weekly, volunteer-led race welcomes runners, joggers, and walkers of all abilities to experience the beauty of the South Boulder Creek Trail. Typical race day conditions for this time of year offer pleasant spring weather, with highs around 63F and lows near 34F, and only a 12% chance of precipitation.

The course itself presents an engaging, predominantly flat route that winds through a picturesque blend of paved and unpaved trails along the South Boulder Creek and Bobolink Trail. Runners will complete a single counter-clockwise loop, followed by an out-and-back section that includes a unique passage through a tunnel under South Boulder Road. While the terrain is generally flat, the "mile high" altitude of Boulder can add an extra challenge, even for seasoned runners. Participants will be treated to constant mountain views and beautiful creekside scenery throughout the route, though some sections may accumulate mud or puddles after rain.

Founded on February 24, 2018, as the first parkrun in the US Mountain Time Zone, South Boulder Creek parkrun is renowned for its inclusive and friendly atmosphere. The start and finish are conveniently located just before the creek bridge, a short walk east from the East Boulder Community Center parking lot, where restrooms and portajohns are available. While formal aid stations are not provided, the emphasis is on participation and camaraderie. Many participants extend the community spirit by gathering for a post-run coffee at a local café, solidifying the welcoming environment that defines this unique event.